Reenforced-concrete building construction



2 Sheet's-Sheet'l Filed May 22 VAN RENSSELAER P. vsAxE REENFORCED CONCRETE BUILDING CONSTRUCTION Aus. 1o 192e.

Agg'. 10 1926.

VAN RENssELAER P. sAxEY REENFORCED CONCRETE BUILDING CONSTRUCTION Filed May 22, 1922 2 Sheets-Sheet 2 gwucnioz C1 Hom@ u, 5

unirse stares Partnr orFiicE.

VAN RENSVSELAER l?. SAXE, F BALTIMORE, MARYLAND.

RELENFQRGED-.CONCRETE BUILDING CONSTRUCTION.

Application filed May 22, 1922.v ySerial NQ..562,638.

The general. object. of this invention is to improve reenforced concrete buildings While lessening their cost., Non-vvood buildings often have. metal frames the members of which are provided with an incombustible coveringA sometimes oi concrete. l Another class of. such buildings. has. concrete Walls containing reen'forcing' metal. elements. In the one class,the entire ramemay beerected as a. frame of metalt only, or it may be erectedin parts extending;v from .foundation to roof, or extending to the height oi" one or more stories. In the other class, metal and cement. elements must be built up. together.y and much of. the metal. is embedded in the concrete vby which; it. is held, but its parts are not. all directly connectedr many being held only by the concrete.

This invention combines advantages. of both types andv in combining, the construction s'such as tol secure a4 great number et advantages. The` metal members. are directly connected and.. as. in metal frame buildings, may be assembled to form a strucn ture. of, practically any desired horizontal or vertical dimensions. quite independently of the concrete` which may itV desired be entirely omitted until the. whole. reenforcing structure is. completed, This. meta-l reenforcement preferably has no rolled Ifbeams or lairders, but. has its coluinnsof that cross section. The beams are compound and made up. principally, ofY flat and angle stock, such as is kept. onhand. in many sizes by the. ordinary dealers iny such goods.. It follows. that the construction of( these parts of. any building, large orv small. heavyor light. is what is. sometimes called rational, that is in close accord in each part ivithcalculated strains tobe borne by such parte, which. are selected so as to give proper strength.

Reenforcement of this` character is read-v ily made capable or" carrying, With a Very lars/*e factor of safety, its own1 Weight.. the Weight of other constimction material. apparatus and concrete forms, and yevenv the weight of a concrete roof, all before any concrete is usedV below the roof.. Provision is made. for enabling the reeniorcino; frame. Without cement or concrete, to resist wind pressure in any direction.

In the drawings'.- l

4Figure 1 is a dagrammatic. plan of the steely reenforcement of a building made in accordance with this invention.

Fiom 2 is a detail of the reenforcement for av Wall beam indicated 'at 22 Fig. 1v.,

*Figr 3 shows the reenforcement forj an interior beam, indicated at 3f-3, Fig. 1.r

Fig. 4; isa detail of my reenforce'ment for a small interior beam indicated at, 4, Fig.. 1. l l

Figs. 5,y 6, and are sections on the lines 5 5, 6 6... and 7-7.'. respectively, ofgFig. 2, concretebeing added.

Figs.. 8. and 9 are. sectionsonf the lines 8+-8 and 9-9., respectively, of. Fig.

Fig. 10 is a section on the'v line 10mm, Fier.l 4;.

Fig. 1 represents any ordinary form of building and. in this instance. shows merely the relative location rotuparts and constructions hereinafter, mentioned. In this gure,

1.0,. 10. rep-resent columns spaced around the outer lines oft the building and at ldesired pointsgwitbin that, line. and 11 1l represent horizontal elements. or beams.H eX- tendin'g from. column to column or between other beams., 2 shows in elevation corresponding .parts of columns 10,` 1.0, Fig. 1, and of a compound beam 13 connecting` them` This beam has, an` upper angle ineinber 14, Van oppositely turned lower angle member 15 having its vertical `member offset from.. the plane, of the corresponding member ofy 14 toa distance equal to the .thickness of vertical bars orshear plates 16.y

each bent above to form flange 16 in the .plane oftheunper flange of 14, and riveted to both 14;.and15, each of which has its ends securediby rivets 1.7 to.. a broad vertical plate 18 extending vertically materially' beyond. the beam and. strongly secured tothe adiacentA column 10.theplateon the right being;V rivetedfto the centralweb of the column While that on. the. left is riveted to one of the flanges of the corresponding column These- Which of heavy I-beam shape. plates 1S are preferably used- Where any beam meets a column of the outer wall or of any heavy partitie-11,. and the entire frame is thus rigidly braced- Without showing braces when theframe is encased in concrete. Alongside the plates 1S the ends of a truss bar 19 are riveted to the horizontal flange of the member 14 and extended obliquely downward to the plane of the like flange of the member along which it passes, under the ends of 'laterally flanged struts 16, Fig. 6, analogous to the members I 16. lt may be here noted that this beam is light, extremely strong, and made up of readily handled steel plates and angles which are always in stock, being as staple as nails, and that the construction gives an unusually stili' column and beam connection. As the construction is duplicated over and over in going around the building and in crossing the same, no concrete is needed to make the structure as a whole resist wind and other lateral strains in any direction. The construction-of interior beams is slightly different and Fig. 3 shows an interior beam without the broad stiftening plate 18 of Fig. 1, other members being substantially duplicated in forming a heavy beam capable of supporting safely the ends of smaller lateral beams. There are in this beam two oppositely turned members 14, two oppositely turned members 15 and two truss bars 19, as seen in Fig. S, vertical members 16 from which project lateral flanges 16 to support upper and lower angle bars 14', 15 of smaller transverse beams, as seen in Fig. 8, which is a section at 8 8, Fig. 3. Where there is no transverse small beam, it is preferred to connect the members 14 and members 15 by U-shaped tie members 20, 20', as seen in Fig. 9. The small transverse beam of Figs. 4, 10 has members 14, 15', etc., corresponding to 14, 15, 16, 16', 19 of Figs. 1, 6,

The steel frame thus far set forth is capable of self support and of carrying relatively moderate weight, and even supporting a heavy roof Vas well as the forms for concrete, the un-set concrete, and the temporary construction material. When this metal structure is ready, thin wood forms for concrete are secured to the framework in any convenient way, usually largely by wires such as 21, Fig. 6 and thewhole frame being thus encased in concrete, the structure is strong enough, when the concrete is fully set and the forms are removed, to carry with a large factor of safety, any load suitable for such a building.

It is to be observed that no heavy girders and no one piece I-beams are employed.

rllhe columns alone are of I-beam cross section with the flanges very wide so that the cross section is of I form. With the aid of proper appliances, these, the only heavy members, are readily erected at the outset, and thereafter the light members are assembled and united rapidly, at a low cost. As the thin concrete forms are all placed about strong metal members already securely fixed and are tied to those members at as short intervals as may be desired, there is a great saving in lumber, in time, and the labor of putting the lumber in place,'no shores or extraneous supports of any kind being used.

Gbviously, the time required for erecting is far less than in ordinary construction, partly because there is no waiting for concrete to se partly because the heavy columns are erected by proper appliances before other parts are in the way, the subse-V quent work consisting in adding light, easily handled members and riveting them in place, and partly because shores are eliminated and very light lumber is quickly wired in place to serve as concrete forms.

Evidently, too, from the great variety of angle and plate steel usually carried in stock, members are quickly selected and afford any desired strength of beam that calculation shows to be needed, and for sustaining very heavy loads the mainmembers of any beam may be duplicated, doubling the strength. i

llVhat l claim is z- 1. A self lsupporting and load sustaining beam for reenforced concrete construction, consisting of relatively light parallel tension and compression chord members, a `plurality of transverse strut members and a tension truss bar resting against the lower ends of said strut members and terminally attached to said parallel compression chord member.

2. A concrete reenforcing beam of rolled steel adapted to support a load during construction having light upper and lower rectilinear tension and compression chord members extending from end to end of the beam, short transverse, spaced members connecting the members first mentioned, and a tension truss bar centrally resting against the lower ends of the short members and terminally attached to the compression chord member above; the several members being rigidly connected.

3. In a reenforced concrete building, column connecting beams consisting of relatively light parallel tension and compression chord members, a plurality of transverse strut members and a tension truss bar centrally resting against the lower ends of said transverse members and terminally 'secured to said compression chord, said beams being adapted for connection with columns to form a self sustaining and load supporting structure.

beam for reenforced concrete construction, consisting of parallel tension and compression chord members, a plurality of transverse strut members, a tension truss bar resting against the lower ends of said strut members and terminally attached to said 4. A self supporting and load 'sustainingcompression chord member, and a plurality of transverse shear members connecting said chord members.

5. A concrete reenforcing beam of light rolled metal consisting of upper and lower structural shapes terminally attached to long gusset plates and centrally connected by vertical strut members and a tension bar terminally attached to said upper structural shape and centrally pressing against.

the lower ends of said strut members.

6. ln a reenforced Concrete building self sustaining and load supporting column reenforcement, column connecting beams consisting of parallel tension and compression chord members, a plurality of transverse strut members and a tension truss bar centrally resting against the lower ends of said transverse members and terminally secured to said compression chord, said beams and column reenforcement being rigidly connect- .ed to forma self sustaining and load supporting structure.

7. A reenforcing beam of light rolled metal. consisting of upper and lower oppositely turned angle bars riveted terminally to opposite faces of long gusset plates and centrally connected by short Vertical members each having a lateral flange, and a tension bar terminally riveted to the horizontal flange of the upper angle bar and centrally pressing against the lower ends of said lateral flanges.

In testimony whereof I hereunto aix my signature.

VAN RENssELAEi-afr. sAXE. 

